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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Oreochromis: Latin, aurum = gold + Greek, chromis = a fish, perhaps a perch (Ref. 45335).
Issue
Turner and Robinson 1991 (Ref. 55079) conclude that Oreochromis saka is a junior synonym of O. karongae (also Ref. 6150), although Turner et al. 1989 (Ref. 40180) reported O. squamipinnis to be most similar to O. saka and O. karongae the most divergent (also Ref. 55954).
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
; Γλυκού νερού βενθοπελαγικό. Tropical; 9°S - 15°S
Africa: Endemic to Lake Malawi.
Length at first maturity / Μέγεθος / Βάρος / Age
Maturity: Lm 29.0, range 25 - ? cm
Max length : 36.0 cm SL αρσενικό/απροσδιόριστο; (Ref. 4967)
Short description
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Ραχιαίες άκανθες (συνολικά) : 15 - 17; Μαλακές ραχιαίες ακτίνες (συνολικά) : 10 - 11; Εδρικές άκανθες: 3; Μαλακές εδρικές ακτίνες: 8 - 10; Σπόνδυλοι: 30 - 32. Breeding males black, in some with white or yellowish dorsal lappets. Testes broad, white and sinuous when fully ripe. Lower pharyngeal toothed area with concave sides; median length of bone 1.2-1.3 times its width and 35.5-39.2 % length of head; blade 1.3-2.1 times median length of toothed area. Caudal fin scaly.
Occurs at a temperature range of 21.5-29.0 °C (Ref. 2). Inhabits very shallow and vegetated regions. Feeds on diatoms and debris collected from the bottom and from between vegetation (Ref. 5595).
Forms breeding colonies in water of 2 to 4 m depth off reedy shores.
Trewavas, E. and G.G. Teugels, 1991. Oreochromis. p. 307-346. In J. Daget, J.-P. Gosse, G.G. Teugels and D.F.E. Thys van den Audenaerde (eds.) Checklist of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 4. (Ref. 5166)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
αλιεία: Εμπορικό(ά); Ενυδρείο: Εμπορικό(ά)
Εργαλεία
Special reports
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Διαδικτυακές πηγές
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01514 (0.00684 - 0.03349), b=2.99 (2.82 - 3.16), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Τροφικό Επίπεδο (Ref.
69278): 2.0 ±0.00 se; based on food items.
Generation time: 2.0 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
Ελαστικότητα (Ref.
120179): Μεσαίο(α), ελάχιστος χρόνος για διπλασιασμό πληθυσμού 1,4 - 4,4 έτη (K=0.56-0.72; tm=3; tmax=5).
Fishing Vulnerability (Ref.
59153): Low vulnerability (23 of 100).
